Grease cup



Nov. 1, 1927.

J. T. WILLIAMS GREASE CUP File'd Au 4, 1924 INENTUR Jan/v. FM/MIME.

Patented Nov. 1, 1927.

UNITED STATES PATENT OFFICE.

GREASE CUP.

Application filed August This invention relates to improvements ingrease cups, and the objects of the invention are to provide a device ofthis character for more efliciently greasing the wheels of vehicles,particularly wagons, without taking the wheels off.

The invention consists essentially in a cup vprovided with a plungeradapted to be inserted through a hole drilled in the hub of a wheel, thecup being enclosed in a casing on which is a spring-operated retainingmember adapted to hold the cup within the casing.

Referring now to the drawings, in which like characters of referenceindicate corresponding parts in each figure:

Figure 1 is an enlarged end view of the hub of a wheel partly in sectionshowing the grease cup in position.

Figure 2 is a side elevation of the cup.

Figure 3 is a longitudinal vertical section of the cup.

Figure 4 is a section on line 44 of Figure 3.

In the drawings, A designates the hub of' a wheel having an opening orhole 10 drilled therein into which is fitted my improved grease cup,comprising an outer casing 11 formed with a suitable shoulder 12 adaptedto contact with the hub of the wheel. Within this casing 11 is designedto fit the grease cup 13 preferably, as here shown, of cylindrical formopen at both ends, the upper end being formed with a shoulder 14:.Within the grease cup is a plunger 15, plunger rod 16 and cap 17 on theouter end thereof, the lower endbeing connected to the plunger 15. Ashere shown, pivotally mounted at 18 on the shoulder of the outer casing,is a dog 19 adapted to engage, as shown in Figures 2 and 3, with theshoulder of the cup when in normal position resting on the shoulder 12of the outer casing, and where- 4, 1924. Serial No. 730,020.

by the cup is held securely in position. This dog is automatically heldin normally engaging position by means of a spiral spring 20 between itand the shoulder 12 of the outer casing. This cup-retaining device canbe of any suitable construction. In the side of the cup I provide asuitable air-hole 21.

From the foregoing the operation of my device will be apparent. Thegrease cup is filled by hand or otherwise and then inserted in thecasing until the shoulder 14 comes below the spring-actuated dog 19 onthe casing 11, then pressure is exerted on the cap of the plunger rodwhich, in turn, exerts pressure through the plunger on the grease,forcing it out through the bottom of the cup to lubricate the wheel.

As many changes could be made in the above construction and manyapparently widely different embodiments of my invention, within thescope of the claim, constructed without departing from the spirit orscope thereof, it is intended that all matter contained in theaccompanying specification and drawings shall be interpreted asillustrative and not in a limiting sense.

lVhat I claim as my invention is:

A grease cup comprising an outer cylinder formed with a flanged top toengage with the hub of a wheel, an inner cylinder formed with a flangedtop to engage with the flanged top of the outer cylinder, a piston orplunger in the inner cylinder, a plunger rod provided with a cap at itsouter end adapted to close the inner cylinder and a spring actuated dogpivotally mounted on the flanged head or top of the outer cylinderadapted to automatically engage with the flanged top of the innercylinder.

In witness whereof I have hereunto set my hand.

JOHN TRUMPER WILLIAMS.

